代码优化 public String getApplyId() { ValueOperations<String,Long> value = redisTemplate.opsForValue(); LocalDateTime dateTime = LocalDateTime.now(); String date = dateTime.format(DateTimeFormatter.ofPattern("yyMMdd")); Long count = 0L; String append = "Reconciliation:AD" + date; String dateString = "AD" + date; if (value.get(append) == null) { // 获取数据库的值 LambdaQueryWrapper<ReconciliationApply> wrapper = new LambdaQueryWrapper<>(); wrapper.eq(ReconciliationApply::getPurchaseCode, dateString); ReconciliationApply selectOne = applyMapper.selectOne(wrapper); if (selectOne == null) { value.setIfAbsent(append, count); redisTemplate.expire(append, 1, TimeUnit.DAYS); } else { String purchaseCode = selectOne.getPurchaseCode(); String substring = purchaseCode.substring(8, 13); value.setIfAbsent(append, Long.parseLong(substring)); redisTemplate.expire(append, 1, TimeUnit.DAYS); } } Long increment = value.increment(append, 1); String str = String.valueOf(increment); return getSequence(dateString, str); } /** * 格式化 key * * @param str * @return */ public static String getSequence(String dateString, String str) { StringBuilder stringJoiner = new StringBuilder(dateString); int len = str.length(); // 取决于业务规模 4 if (len == DEFAULT_LENGTH) { return stringJoiner.append(str).toString(); } if (str.length() > DEFAULT_LENGTH) { throw new RuntimeException("申请单号已使用完成，请明天再申请"); } int rest = DEFAULT_LENGTH - len; for (int i = 0; i < rest; i++) { stringJoiner.append("0"); } stringJoiner.append(str); return stringJoiner.toString(); }

public class DocumentService extends ServiceImpl<DocumentMapper, Document> { @Resource private DocumentMapper documentMapper; @Resource private CateMapper cateMapper; @Resource private HistoryMapper historyMapper; public List<Document> listDocument(PageInfo<?> pageInfo, Document document) { PageHelper.startPage(pageInfo.getCurrent(), pageInfo.getPageSize()); List<Document> documentList = documentMapper.selectList(Wrappers.<Document>lambdaQuery() .like(StringUtils.isNotBlank(document.getTitle()), Document::getTitle, document.getTitle()) .like(StringUtils.isNotBlank(document.getSummary()), Document::getSummary, document.getSummary()) .eq(document.getCateId() != null, Document::getCateId, document.getCateId()) .eq(document.getDeptId() != null, Document::getDeptId, document.getDeptId()) .eq(document.getActive() != null, Document::getActive, document.getActive()) .eq(document.getRecommend() != null, Document::getRecommend, document.getRecommend()) .eq(document.getCarousel() != null, Document::getCarousel, document.getCarousel()) .orderByDesc(Document::getDateTime) ); if (!documentList.isEmpty()) { List<Long> documentIdList = documentList.stream().map(Document::getCateId).collect(Collectors.toList()); Map<Long, Cate> cateMap = cateMapper.selectBatchIds(documentIdList).stream().collect(Collectors.toMap(Cate::getId, e -> e, (e1, e2) -> e2)); for (Document documentItem : documentList) { documentItem.setCate(cateMap.get(documentItem.getCateId())); } } return documentList; } public Document getDocumentById(Long id, HttpServletRequest request) { Document document = documentMapper.selectById(id); if (document == null) { return null; } document.setHits(document.getHits() + 1); documentMapper.updateById(document); document.setCate(cateMapper.selectById(document.getCateId())); History history = new History(); history.setDocumentId(id); history.setDateTime(LocalDateTime.now()); history.setUserId(Long.valueOf((String) StpUtil.getLoginId())); history.setIp(request.getRemoteAddr()); historyMapper.insert(history); return document; } public List<Document> listRecommend(Long id) { //Todo 推荐 return new ArrayList<>(); } public Boolean copyDocument(Long id) { Document document = documentMapper.selectById(id); if (document == null) { return false; } document.setDateTime(LocalDateTime.now()); document.setId(null); document.setDeptId(StpUtil.getSession().getModel(SaSession.USER, User.class).getBelongDeptId()); document.setHits(0L); document.setActive(false); document.setRecommend(false); int result = documentMapper.insert(document); return result == 1; } }

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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Windows.Forms; using Microsoft.Win32; using Shell32; using static System.Windows.Forms.VisualStyles.VisualStyleElement; namespace WindowsFormsApp7 { public partial class Form2 : Form { private List<FileInfo> filesToClean = new List<FileInfo>(); private long totalSize = 0; private long processedSize = 0; private int processedFiles = 0; private readonly HashSet<string> _systemFileExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase) { ".ini", ".config", ".sys", ".dll", ".drv", ".ocx", ".cpl", ".bak", ".wxapkg", ".dmp", ".tmp", ".log", ".bat", ".cmd", ".reg", ".vxd", ".crc", ".json", ".dat", ".db", ".mmkv", ".data",".exe",".mui", ".xml",".etl",".bakdb",".diagsession", ".lnk", ".url" }; private CancellationTokenSource cancellationTokenSource; private const int MaxDegreeOfParallelism = 4; // 可自行设置线程数 private long releasedMemorys; public Form2() { InitializeComponent(); InitializeListView(); } private void InitializeListView() { listView1.View = View.Details; listView1.CheckBoxes = true; listView1.Columns.Add("文件名", 150); listView1.Columns.Add("分类", 100); listView1.Columns.Add("文件大小(MB)", 100); listView1.Columns.Add("文件路径", 300); } // 浏览器缓存清理 private void ClearBrowserCache() { string[] browsers = { Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Google", "Chrome", "User Data", "Default", "Cache"), Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Mozilla", "Firefox", "Profiles"), Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Microsoft", "Edge", "User Data", "Default", "Cache") }; foreach (string path in browsers) { if (Directory.Exists(path)) { try { Directory.Delete(path, true); } catch (Exception ex) { MessageBox.Show($"清理浏览器缓存失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } } // Windows更新清理 private void ClearWindowsUpdates() { string updateFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "SoftwareDistribution", "Download"); if (Directory.Exists(updateFolder)) { try { Directory.Delete(updateFolder, true); } catch (Exception ex) { MessageBox.Show($"清理 Windows 更新文件失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } // 日志文件清理 private void ClearLogFiles() { string[] logFolders = { Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "System32", "winevt", "Logs"), Path.GetTempPath() }; foreach (string folder in logFolders) { if (Directory.Exists(folder)) { try { foreach (string file in Directory.GetFiles(folder, ".log", SearchOption.AllDirectories)) { File.Delete(file); } } catch (Exception ex) { MessageBox.Show($"清理日志文件失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } } // 缩略图缓存清理 private void ClearThumbnailCache() { string thumbnailCache = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Microsoft", "Windows", "Explorer"); if (Directory.Exists(thumbnailCache)) { try { foreach (string file in Directory.GetFiles(thumbnailCache, ".db", SearchOption.AllDirectories)) { File.Delete(file); } } catch (Exception ex) { MessageBox.Show($"清理缩略图缓存失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } // 回收站清理 private void ClearRecycleBin() { try { Shell shell = new Shell(); Folder recycleBin = shell.NameSpace(10); foreach (FolderItem2 item in recycleBin.Items()) { item.InvokeVerb("Delete"); } } catch (Exception ex) { MessageBox.Show($"清理回收站失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } // 大文件查找 private List<FileInfo> FindLargeFiles(long minSize) { List<FileInfo> largeFiles = new List<FileInfo>(); var drives = DriveInfo.GetDrives().Where(d => d.IsReady).ToList(); Parallel.ForEach(drives, new ParallelOptions { MaxDegreeOfParallelism = MaxDegreeOfParallelism }, drive => { try { foreach (FileInfo file in drive.RootDirectory.EnumerateFiles("", SearchOption.AllDirectories)) { if (file.Length > minSize 1024 * 1024 && !_systemFileExtensions.Contains(file.Extension)) { lock (largeFiles) { largeFiles.Add(file); } } } } catch (Exception) { // 忽略异常 } }); return largeFiles; } // 重复文件查找 private List<FileInfo> FindDuplicateFiles() { Dictionary<string, List<FileInfo>> fileGroups = new Dictionary<string, List<FileInfo>>(); var drives = DriveInfo.GetDrives().Where(d => d.IsReady).ToList(); Parallel.ForEach(drives, new ParallelOptions { MaxDegreeOfParallelism = MaxDegreeOfParallelism }, drive => { try { foreach (FileInfo file in drive.RootDirectory.EnumerateFiles("", SearchOption.AllDirectories)) { if (!_systemFileExtensions.Contains(file.Extension)) { string key = file.Length.ToString(); lock (fileGroups) { if (!fileGroups.ContainsKey(key)) { fileGroups[key] = new List<FileInfo>(); } fileGroups[key].Add(file); } } } } catch (Exception) { // 忽略异常 } }); List<FileInfo> duplicateFiles = new List<FileInfo>(); foreach (List<FileInfo> group in fileGroups.Values) { if (group.Count > 1) { duplicateFiles.AddRange(group.Skip(1)); } } return duplicateFiles; } // 注册表清理 private void CleanRegistry() { try { using (RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Software", true)) { if (key != null) { key.DeleteSubKeyTree("TestKey", false); // 示例，需替换为实际要清理的键 } } } catch (Exception ex) { MessageBox.Show($"清理注册表失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } // 微信30天以上临时文件清理 private List<FileInfo> FindOldWeChatTempFiles() { List<FileInfo> oldWeChatFiles = new List<FileInfo>(); string weChatTempPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Tencent", "WeChat", "Temp"); if (Directory.Exists(weChatTempPath)) { try { DateTime thirtyDaysAgo = DateTime.Now.AddDays(-30); var files = new DirectoryInfo(weChatTempPath).EnumerateFiles("", SearchOption.AllDirectories); Parallel.ForEach(files, new ParallelOptions { MaxDegreeOfParallelism = MaxDegreeOfParallelism }, file => { if (file.LastWriteTime < thirtyDaysAgo) { lock (oldWeChatFiles) { oldWeChatFiles.Add(file); } } }); } catch (Exception) { // 忽略异常 } } return oldWeChatFiles; } // 系统更新残留文件清理 private List<FileInfo> FindWindowsUpdateResidualFiles() { List<FileInfo> residualFiles = new List<FileInfo>(); string[] updateResidualFolders = { Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "WinSxS", "Temp"), Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), "Prefetch") }; Parallel.ForEach(updateResidualFolders, new ParallelOptions { MaxDegreeOfParallelism = MaxDegreeOfParallelism }, folder => { if (Directory.Exists(folder)) { try { foreach (FileInfo file in new DirectoryInfo(folder).EnumerateFiles("", SearchOption.AllDirectories)) { lock (residualFiles) { residualFiles.Add(file); } } } catch (Exception) { // 忽略异常 } } }); return residualFiles; } // 扫描文件 private async void ScanFiles() { cancellationTokenSource = new CancellationTokenSource(); try { btnScan.Enabled = false; btnClean.Enabled = false; listView1.Items.Clear(); filesToClean.Clear(); totalSize = 0; await Task.Run(async () => { var tasks = new List<Task>>(); if (checkLargeFiles.Checked) { tasks.Add(Task.Run(() => FindLargeFiles(100))); } if (checkDuplicates.Checked) { tasks.Add(Task.Run(() => FindDuplicateFiles())); } if (checkWeChat.Checked) { tasks.Add(Task.Run(() => FindOldWeChatTempFiles())); } if (checkBrowserCache.Checked) { tasks.Add(Task.Run(() => FindWindowsUpdateResidualFiles())); } var results = await Task.WhenAll(tasks); foreach (var result in results) { filesToClean.AddRange(result); } if (cancellationTokenSource.Token.IsCancellationRequested) { return; } await InvokeOnUiThreadAsync(() => { foreach (FileInfo file in filesToClean) { ListViewItem item = new ListViewItem(file.Name); string category = ""; if (filesToClean.Where(f => f.Length > 100 1024 * 1024).Contains(file)) { category = "大文件"; } else if (filesToClean.Where(f => filesToClean.Count(f2 => f2.Length == f.Length) > 1).Contains(file)) { category = "重复文件"; } else if (file.DirectoryName.Contains("WeChat")) { category = "微信临时文件"; } else if (file.DirectoryName.Contains("WinSxS") || file.DirectoryName.Contains("Prefetch")) { category = "系统更新残留文件"; } item.SubItems.Add(category); item.SubItems.Add((file.Length / (1024.0 * 1024.0)).ToString("F2")); item.SubItems.Add(file.FullName); listView1.Items.Add(item); totalSize += file.Length; } lblTotalFiles.Text = $"扫描文件总数: {filesToClean.Count}"; lblTotalSize.Text = $"文件总大小: {totalSize / (1024.0 * 1024.0):F2} MB"; processedSize = 0; processedFiles = 0; progressBar1.Value = 0; }); }, cancellationTokenSource.Token); } catch (OperationCanceledException) { // 操作被取消 } finally { btnScan.Enabled = true; btnClean.Enabled = true; } } // 清理勾选的文件 private async void CleanSelectedFiles() { cancellationTokenSource = new CancellationTokenSource(); try { btnScan.Enabled = false; btnClean.Enabled = false; processedSize = 0; processedFiles = 0; await Task.Run(() => { foreach (ListViewItem item in listView1.CheckedItems) { if (cancellationTokenSource.Token.IsCancellationRequested) { return; } string filePath = item.SubItems[3].Text; try { if (File.Exists(filePath)) { FileInfo file = new FileInfo(filePath); processedSize += file.Length; file.Delete(); processedFiles++; } else if (Directory.Exists(filePath)) { Directory.Delete(filePath, true); foreach (FileInfo file in new DirectoryInfo(filePath).EnumerateFiles("", SearchOption.AllDirectories)) { processedSize += file.Length; } processedFiles++; } } catch (Exception ex) { MessageBox.Show($"清理文件 {filePath} 失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } this.Invoke((MethodInvoker)delegate { lblProcessedFiles.Text = $"处理文件数: {processedFiles}"; lblProcessedSize.Text = $"已处理大小: {processedSize / (1024.0 1024.0):F2} MB"; progressBar1.Value = (int)((double)processedSize / totalSize * 100); }); } if (checkBrowserCache.Checked) { ClearBrowserCache(); } if (checkWinUpdate.Checked) { ClearWindowsUpdates(); } if (checkLogs.Checked) { ClearLogFiles(); } if (checkThumbnails.Checked) { ClearThumbnailCache(); } if (checkRecycleBin.Checked) { ClearRecycleBin(); } if (checkRegistry.Checked) { CleanRegistry(); } // 释放内存 ReleaseMemory(cancellationTokenSource.Token); }, cancellationTokenSource.Token); } catch (OperationCanceledException) { // 操作被取消 } finally { btnScan.Enabled = true; btnClean.Enabled = true; MessageBox.Show($"释放的内存大小: {releasedMemorys / (1024.0 * 1024.0):F2} MB", "内存释放结果", MessageBoxButtons.OK, MessageBoxIcon.Information); } } // 全选 private void SelectAll() { foreach (ListViewItem item in listView1.Items) { item.Checked = true; } } // 反选 private void InvertSelection() { foreach (ListViewItem item in listView1.Items) { item.Checked = !item.Checked; } } private void btnScan_Click(object sender, EventArgs e) { ScanFiles(); } private void btnClean_Click(object sender, EventArgs e) { CleanSelectedFiles(); } private void btnSelectAll_Click(object sender, EventArgs e) { SelectAll(); } private void btnInvertSelection_Click(object sender, EventArgs e) { InvertSelection(); } // 模拟 InvokeAsync 的方法 private Task InvokeOnUiThreadAsync(Action action) { var tcs = new TaskCompletionSource<bool>(); if (this.InvokeRequired) { this.Invoke(new Action(() => { try { action(); tcs.SetResult(true); } catch (Exception ex) { tcs.SetException(ex); } })); } else { try { action(); tcs.SetResult(true); } catch (Exception ex) { tcs.SetException(ex); } } return tcs.Task; } // 内存释放功能 private void ReleaseMemory(CancellationToken cancellationToken) { // 监控内存使用情况 long initialMemory = GC.GetTotalMemory(false); // 释放非托管资源 // ReleaseUnmanagedResources(); // 强制进行完整的垃圾回收 GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, true, true); GC.WaitForPendingFinalizers(); // 再次监控内存使用情况 long finalMemory = GC.GetTotalMemory(false); long releasedMemory = initialMemory - finalMemory; // 输出释放的内存大小 releasedMemorys = releasedMemory; } } }深度优化以上代码，以上代码运行扫描时出现 form界面假死，导致 progressBar1 其他数据无法正常更新。生成完整代码

var progress = new Progress<int>(p => progressBar1.Value = p); try { await Task.Run(() => ScanFiles(@"C:\target", progress, cts.Token), cts.Token); } catch (OperationCanceledException) { ...

package com.xymzsfxy.backend.service; import com.xymzsfxy.backend.entity.PriceHistory; import com.xymzsfxy.backend.entity.Product; import com.xymzsfxy.backend.repository.PriceHistoryRepository; import com.xymzsfxy.backend.repository.ProductRepository; import lombok.RequiredArgsConstructor; import lombok.extern.slf4j.Slf4j; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.springframework.beans.factory.annotation.Value; import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.io.IOException; import java.math.BigDecimal; import java.time.LocalDateTime; import java.util.Map; @Slf4j @Service @RequiredArgsConstructor public class PriceCrawlerService { private final ProductRepository productRepository; private final PriceHistoryRepository priceHistoryRepository; @Value("#{${crawler.sources}}") private Map<String, String> crawlerSources; @Value("#{${crawler.selectors}}") private Map<String, String> crawlerSelectors; private static final int TIMEOUT_MS = 10_000; private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"; @Async("crawlerTaskExecutor") public void crawlPrices(Long productId) { productRepository.findById(productId).ifPresentOrElse( product -> crawlerSources.forEach((source, url) -> processSource(product, source, url)), () -> log.warn("商品不存在: ID={}", productId) ); } private void processSource(Product product, String sourceName, String urlTemplate) { try { final String targetUrl = buildTargetUrl(product, urlTemplate); final Document document = fetchDocument(targetUrl); final BigDecimal price = extractPrice(document, sourceName); savePriceData(product, sourceName, price); log.debug("价格抓取成功: {} | {} | {}", sourceName, product.getId(), price); } catch (IOException e) { log.error("[{}] 网络请求异常: {}", sourceName, e.getMessage()); } catch (Exception e) { log.error("[{}] 数据处理异常: {}", sourceName, e.getMessage(), e); } } private String buildTargetUrl(Product product, String urlTemplate) { return String.format(urlTemplate, product.getExternalId()); } private Document fetchDocument(String url) throws IOException { return Jsoup.connect(url) .timeout(TIMEOUT_MS) .userAgent(USER_AGENT) .get(); } private BigDecimal extractPrice(Document document, String sourceName) { String selector = crawlerSelectors.get(sourceName); String priceText = document.selectFirst(selector).text(); return parsePrice(priceText); } private BigDecimal parsePrice(String priceText) { String numericString = priceText.replaceAll("[^\\d.,]", ""); return new BigDecimal(numericString.replace(",", "")); } @Transactional protected void savePriceData(Product product, String source, BigDecimal price) { persistPriceHistory(product, source, price); updateProductPrice(product, price); } private void persistPriceHistory(Product product, String source, BigDecimal price) { PriceHistory history = PriceHistory.builder() .productId(product.getId()) .source(source) .price(price) .crawlTime(LocalDateTime.now()) .build(); priceHistoryRepository.save(history); } private void updateProductPrice(Product product, BigDecimal price) { product.setLatestPrice(price); product.setUpdatedTime(LocalDateTime.now()); productRepository.save(product); } }'com.xymzsfxy.backend.entity.PriceHistory.PriceHistoryBuilder' 中的 'crawlTime(java.util.Date)' 无法应用于 '(java.time.LocalDateTime)'

<think>嗯，用户给了一个Java代码片段，里面有一个错误，是关于PriceHistoryBuilder的crawlTime方法无法应用LocalDateTime类型的参数。我需要分析这个问题并给出解决方法。首先，看错误信息：'crawlTime(java.util...

TimePeriodTrafficRes res = new TimePeriodTrafficRes(); String deviceCode = new String(); if (StringUtils.isNotBlank(req.getDirection()) && req.getDirection().equals("上行")){ deviceCode = String.valueOf(YUNK_UP_DEVICE.equals("TR9-2-D5D5244110132")); }else { deviceCode = String.valueOf(YUNK_DOWN_DEVICE.equals("TR9-2-D5D5244110126")); } List<YunkTimePeriodTrafficRes> timePeriodTraffic = yunkStatisticDataRepo.timePeriodTraffic(DateUtils.getDayStartTime(req.getStartDate()), DateUtils.getDayEndTime(req.getEndDate()),deviceCode); if (!CollectionUtils.isEmpty(timePeriodTraffic)) { timePeriodTraffic.forEach(t -> { if (t.getHourSlot().equals("0")) { res.setHour_0_2(t.getFlowSum()); } if (t.getHourSlot().equals("2")) { res.setHour_2_4(t.getFlowSum()); } if (t.getHourSlot().equals("4")) { res.setHour_4_6(t.getFlowSum()); } if (t.getHourSlot().equals("6")) { res.setHour_6_8(t.getFlowSum()); } if (t.getHourSlot().equals("8")) { res.setHour_8_10(t.getFlowSum()); } if (t.getHourSlot().equals("10")) { res.setHour_10_12(t.getFlowSum()); } if (t.getHourSlot().equals("12")) { res.setHour_12_14(t.getFlowSum()); } if (t.getHourSlot().equals("14")) { res.setHour_14_16(t.getFlowSum()); } if (t.getHourSlot().equals("16")) { res.setHour_16_18(t.getFlowSum()); } if (t.getHourSlot().equals("18")) { res.setHour_18_20(t.getFlowSum()); } if (t.getHourSlot().equals("20")) {

<think>嗯，用户问的是如何优化一段Java代码，主要是根据时间区间统计流量数据，并设置到TimePeriodTrafficRes对象中。首先，我需要理解用户的问题。用户提到代码冗余和可读性差，所以可能需要找出重复的代码块，看...

<DYGuid dt="1" ht="0" bt="0">A2AAA28AD80CF3986FB9F9B773F6C3CB907909B2</DYGuid>

long timestamp = Convert.ToInt64(match.Groups["timestamp"].Value); int typeFlag = Convert.ToInt32(match.Groups["type"].Value); int tagField = Convert.ToInt32(match.Groups["tag"].Value); DateTime ...

LocalDateTime 转 Long

Long longValue = Long.valueOf(seconds); 这样，我们就成功将 LocalDateTime 对象转换为 Long 类型。需要注意的是，此转换过程仅精确到秒级别，如果需要更高精度的转换，可以使用 toInstant() 方法进行转换，...

CREATE TABLE t_pdm_doc_attr ( id bigint(20) NOT NULL COMMENT '物理主键，全局唯一', tenant_id varchar(8) NOT NULL COMMENT '租户ID', attr_id bigint(20) NOT NULL COMMENT '动态属性编码', attr_value varchar(255) DEFAULT NULL COMMENT '动态属性名称', doc_id bigint(20) NOT NULL COMMENT '关联的文档id，t_osm_doc', created_by char(32) NOT NULL COMMENT '创建人', created_date datetime NOT NULL COMMENT '创建时间', last_modified_by char(32) NOT NULL COMMENT '修改人', last_modified_date datetime NOT NULL COMMENT '修改时间', PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='文档动态属性表'; 写一个mybatis插入语句参数要有标签判断

<think>好的，我现在需要帮用户写一个MyBatis的插入语句，参数需要带有标签判断。首先，我要理解用户提供的表结构。表名是t_pdm_doc_attr，字段包括id、tenant_id、attr_id、attr_value、doc_id、created_by、...

CREATE TABLE [dbo].[QualityTestingAppeal] ( [ID] [bigint] NOT NULL IDENTITY(1, 1), [QualityTestingId] [bigint] NOT NULL, [OldState] [int] NOT NULL, [CreateTime] [datetime] NOT NULL, [CreateId] [bigint] NOT NULL, [AppealReason] [nvarchar] (512) COLLATE Chinese_PRC_CI_AS NULL, [AppealEnclosure] [varchar] (256) COLLATE Chinese_PRC_CI_AS NULL, [HandleAppealAUID] [bigint] NULL, [HandleAppealTime] [datetime] NULL, [HandleState] [int] NOT NULL CONSTRAINT [DFQualityTeHandl__59B11114] DEFAULT ((0)) )根据表设计生成带注释的C#实体类字段格式 public Id Id{get;set;}

好的，以下是根据表设计生成带注释的C#实体类，字段格式为 public Id Id{get;set;} 的代码： csharp using System; /// <summary> /// 实体类QualityTestingAppeal。(属性说明自动提取数据库字段的描述信息) //...

java输出当前时间对应的时间戳的ISO，秒，毫秒格式。将（5）的时间戳转换为秒和毫秒形式并输出。（7）将（5）中的时间戳转换为LocalDateTime类型，并输出。（8）将（4）中的日期时间转换为毫秒形式时间戳，并输出。

String isoFormat = now.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME); long seconds = now.toEpochSecond(); long milliseconds = now.toInstant().toEpochMilli(); System.out.println("Current time in ...

基于黑马程序员的瑞吉外卖新增加一个用户评论功能，要求在订单完成时再来一单按钮的下添加一个菜品评价的按钮实现菜品评论提交功能，在用户选菜页面点击菜品图片可以查看到该菜品所有的菜品评论，这些功能的前端html代码请给出完整的代码以及所需改动地方的提示，并给出controller、service、mapper层对应的代码和实体类的代码

public R<List<Map<String, Object>>> getCommentsByDishId(Long dishId) { List<Map<String, Object>> comments = baseMapper.getByDishId(dishId); return R.success(comments); } } #### 五、Controller...

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java输出当前时间对应的时间戳的ISO，秒，毫秒格式。将（5）的时间戳转换为秒和毫秒形式并输出。（7）将（5）中的时间戳转换为LocalDateTime类型，并输出。（8）将（4）中的日期时间转换为毫秒形式时间戳，并输出。

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